Sink



FIG. 1 is a front perspective view of a sink;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a left side view thereof (the right side view is identical tothe left side view); and,

FIG. 6 is a rear view thereof.

The bottom view is non-ornamental, and therefore, not shown.

CLAIM The ornamental design for a sink, as shown and described.